Starting right tackle Phil Loadholt tore his Achilles' tendon early in the Vikings' game against Tampa Bay, NFL Media Insider Ian Rapoport reported, according to a source informed of the injury. Loadholt was visibly upset as he was carted off to the locker room.

The Vikings showed how much they value Loadholt when they gave him a four-year, $25 million contract in 2013. After starting 89 games in his Vikings career, he suddenly has been plagued by serious injuries. He missed the last five games of last season with a torn pectoral muscle.

The news is bad for the entire Vikings offense, especially Adrian Peterson. Loadholt was a pillar as a run blocker. Rookie fourth-round pick T.J. Clemmings replaced Loadholt on Saturday night, and should get the first crack at replacing him permanently.

Here are some other injury updates from Saturday we are tracking:

1. Buccaneers right tackle Demar Dotson hurt his left knee during Saturday night's game against the Vikings. NFL Media's Jeff Darlington reports Dotson could barely put weight on his knee coming off the field and had to be carted off to the locker room. Rapoport adds Dotson will undergo an MRI to determine the severity of the injury -- initially believed to be a sprained MCL.